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Which Transformer?
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... There are three basic styles of transformers used in the suspended scaffold industry; buck/boost, step-up, and step-down. Buck/Boost transformers are the most common transformers used in suspended scaffolding. As the name implies these transformers can have two different uses. “Bucking” power is don ...
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... Wind energy is undergoing a rapid development in size and capacity, as a result modern wind turbine power rating is exceeding up to 5 MW. Grid interaction and grid impact of wind turbines has been in focus during the past few years. Grid connected variable speed wind turbine generator invariably use ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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